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cron.php
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cron.php
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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* CLI cron
*
* This script looks through all the module directories for cron.php files
* and runs them. These files can contain cleanup functions, email functions
* or anything that needs to be run on a regular basis.
*
* @package core
* @subpackage cli
* @copyright 2009 Petr Skoda (http://skodak.org)
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
define('CLI_SCRIPT', true);
require(__DIR__.'/../../config.php');
require_once($CFG->libdir.'/clilib.php'); // cli only functions
require_once($CFG->libdir.'/cronlib.php');
// now get cli options
list($options, $unrecognized) = cli_get_params(
[
'help' => false,
'stop' => false,
'list' => false,
'force' => false,
'enable' => false,
'disable' => false,
'disable-wait' => false,
], [
'h' => 'help',
's' => 'stop',
'l' => 'list',
'f' => 'force',
'e' => 'enable',
'd' => 'disable',
'w' => 'disable-wait',
]
);
if ($unrecognized) {
$unrecognized = implode("\n ", $unrecognized);
cli_error(get_string('cliunknowoption', 'admin', $unrecognized));
}
if ($options['help']) {
$help =
"Execute periodic cron actions.
Options:
-h, --help Print out this help
-s, --stop Notify all other running cron processes to stop after the current task
-l, --list Show the list of currently running tasks and how long they have been running
-f, --force Execute task even if cron is disabled
-e, --enable Enable cron
-d, --disable Disable cron
-w, --disable-wait=600 Disable cron and wait until all tasks finished or fail after N seconds (optional param)
Example:
\$sudo -u www-data /usr/bin/php admin/cli/cron.php
";
echo $help;
die;
}
if ($options['stop']) {
// By clearing the caches this signals to other running processes
// to exit after finishing the current task.
\core\task\manager::clear_static_caches();
die;
}
if ($options['enable']) {
set_config('cron_enabled', 1);
mtrace('Cron has been enabled for the site.');
exit(0);
}
if ($options['disable']) {
set_config('cron_enabled', 0);
\core\task\manager::clear_static_caches();
mtrace('Cron has been disabled for the site.');
exit(0);
}
if ($options['list']) {
$tasks = \core\task\manager::get_running_tasks();
mtrace('The list of currently running tasks:');
$format = "%7s %-12s %-9s %-20s %-52s\n";
printf ($format,
'PID',
'HOST',
'TYPE',
'TIME',
'CLASSNAME'
);
foreach ($tasks as $task) {
printf ($format,
$task->pid,
substr($task->hostname, 0, 12),
$task->type,
format_time(time() - $task->timestarted),
substr($task->classname, 0, 52)
);
}
exit(0);
}
if ($wait = $options['disable-wait']) {
$started = time();
if (true === $wait) {
// Default waiting time.
$waitsec = 600;
} else {
$waitsec = $wait;
$wait = true;
}
set_config('cron_enabled', 0);
\core\task\manager::clear_static_caches();
mtrace('Cron has been disabled for the site.');
mtrace('Allocating '. format_time($waitsec) . ' for the tasks to finish.');
$lastcount = 0;
while ($wait) {
$tasks = \core\task\manager::get_running_tasks();
if (count($tasks) == 0) {
mtrace('');
mtrace('All scheduled and adhoc tasks finished.');
exit(0);
}
if (time() - $started >= $waitsec) {
mtrace('');
mtrace('Wait time ('. format_time($waitsec) . ') elapsed, but ' . count($tasks) . ' task(s) still running.');
mtrace('Exiting with code 1.');
exit(1);
}
if (count($tasks) !== $lastcount) {
mtrace('');
mtrace(count($tasks) . " tasks currently running.", '');
$lastcount = count($tasks);
} else {
mtrace('.', '');
}
sleep(1);
}
}
if (!get_config('core', 'cron_enabled') && !$options['force']) {
mtrace('Cron is disabled. Use --force to override.');
exit(1);
}
\core\local\cli\shutdown::script_supports_graceful_exit();
cron_run();